Telegraphy.



P. B. DELANY.

TELEGRAPHY.

APPLICATION FILED DEC .29. 1908.

I 1 14 752., Patgnted July 13, 1915'.

2 SHEETS-SHEET I.

P. B. DELANY.

TELEGRAPHY.

APPLICATION FILED DEC.29. [908.

1,146,752, PatentedJuly13,1915.

2 SHEETS-SHEET 2- EATEICKB. DELANY, OF SOUTH GRANGE, NEW JERSEY, ASSIGNOR TO THE TELEEOST COMPANY, 015 NEW YORK, N. Y., A CORPORATION OF MAINE.

Specification of-Letters Patent.

. Application filed December 2a, 1908. Serial no. ceases.

To all whom it may concern:

Be it known that I, PATRICK B. Dnmnr, a citizen of the United States of America,

residing in South Orange, in the county of Essex, State of New Jersey,=have invented certain Improvements in 'Telegraphy, of

which the following is a specification.

My improvement contemplates primarily the increase of'speed of transmission by the use of. a perforated tape and automatic- 5 a local'sounder circuit, for transcription by a sound at a speed under control of the'operator.

Que hundred and twenty-five words per minute can be perforated at a receiving station and .the tapes distributed among five operators, each having a local transmitter circuit with a. sounder into which the signals perforated in his tape are transmitted and reproduced on the sounder'and, bv the operator, transcribed by the use of a typewriting machine or otherwise.

As this systemcan be be'realized over a single'wire wherever a polar duplex will operate. I

An important advantage of this system lies in the fact'that the signals produced in the local reading circuit are firm and uniform, being in no way affected by line conditions, and if'a word sounds doubtful to the operator he can pull the tape back for repetition or verify the word by glancing at .the

- perforations. The tape can be preserved as a'check upon the operator who. prepared the original perforated tape and upon the operator who transcribed the received message.-

and paid according to their abilities, which are in no way affected by'the qualifications of the operator at the other end of the line as the impulses made by perforations are uniform. It will be seen. therefore. that this system has the capacity of threeduv plexed wires, and that there is no departure from the established style of Working so far as the operator'is concerned. Messages may duplexed the equiv: alent of ten" first class Morse circuits can Patented July as, teas,

be perforated by ordinary Morse key, autodot key or keyboard machine at any speed the operator is able to work, as he is entirely independent of the receiver,

' Another important improvement is comprised inlthe novel form of contacts for the transmitter.

Another improvement'relates tore-trans mis'sipn, or repeating of messages from one circuit into another. This may be done .very

efl'ectually by utilizing the lever movementsof -a perforator to re-transmit into another and while the record isbeing made,'so that perforation and re-transmission can be carmod on at the same time, and whether 'drop co ies are desired or not repetition may he e acted in this way from station to stationover the longestcircuits.

In the accompanying drawing; Figure 1 is a diagram illustrating transmission and reception according to this invention; Fig; v1*, a diagram showing a local transcribingcircuit including a reading sounder; Fig. 2,

a diagram-showing transmission, reception, and relaying into another circuit. Y

. Referring now toFig. 1, T represents the circuit; impulses recorded by them on a tape I automatic transmitter at the sending sta tion X. lflever- Z, be pressed forward so that the'rollersmayv grip the tape it the $5 I Qtransmitting fingers f, will make contact through, the cuts in the edges of tape it, meeting the lower contacts which are coni nected to positive and negative poles of bat tery b, respectively thereby actuating polarized transmitter ii, and sending dot and dash signals into line L, from main battery I). At the receiving station Y, the line goes r to polarized relay B, and thence to earth. This relay operates the perforator P through battery. 6 which isconnected to the switch a, and to the armature of the relay. An impulse beginning a character, dot or dash,

moves the armature of B, to its contact a,

closingthe circuitof magnet d, and causing its lever to drive the punch through thetape,

at the same time-the lever reverses the position of switch a transferring thecontact finger from segm'enti to 2 breahing the circuit of magnet 12, and completing the:.c1r-

cuit of magnet e in anticipation of the re-' turn of the armature of B to its original position against contact a, whereupon magnet e is energized audits-lever sends its punch through the tape, and again reverses the mines the length of the characters, it being clear that the polarized relay armature having been moved to the left will keep the cireults in which are their armatures and left hand contacts closed until reversed by a hole in the upper edge of the tape passing between the contacts of the automatic transmitter. v

Thelocal transcribing circuit is disclosed in' Fig. 1. The polarized relay C, operates, in this case, the sounder S from which the receiver operator copies the message.

It will be seen that the original tape is per-v forated by dot and dash movements of ,a Morse key; that the perforator magnets of P, areenergizedby dots only; that the automatic transmitter T, operates the polarized transmitter A, by dot impulses; that this polarized relay'transmitt'er sends dot and dash impulses over the line to relay B, which operates the perforator P by dot impulses; that the tape roduced operates through transmitter Q t e polarized relay C, by dot impulses; and that this relay operates the sounder by dot and dash impulses.

Fig. 2 represents simultaneous perforation and retransmission into another circuit at Y. When the perforating levers of magnets e and d are attracted reverse impulses are transmitted from battery I) to polarized relay h, as follows :-When receiving polarized relay 4; is energized by a negative im-.

pulse transmitted by perforation p, its armature moves to contact 0, magnet d, is energized, its punch driven through the tape, contacts 9,1, closed and polarized re- A lay h, energized. When armature of polarized relay reaches contact a a positive impulse correspondin with perforation p, is sent into the line from positive pole of main battery BB. Simultaneous with these operations the switch a, has been moved from contact 21 to contact 71, breaking the circuit of magnet 41, and establishing a circuit for magnet e, which is energized upon the return of tongue of relay 'v, to its contact 0, when the punch of magnet e is driven through the tape, contacts 9', a closed and the circuit of polarizedrelay h reversed, sending a negative impulse correspending to perforation 72 into line L from its contact 0 Transmission from X is the same as already described in Fig. 1.-

I claim: 1

1. In telegraphy, an automatic transmitter, a local circuit, a polarized transmitter in said circuit controlled by the automatic transmitter, a main line into which sig-- rule are sent by said polarized transmitter, a receiving polarized relay in said main line, a local circuit controlled by said polarized relay, electromagnetic tape perforating means in said local circuit and means controlled by said perforating means for sending into another line signal impulses corresponding with the actuations of the perforating means.

2. In telegraphy, a tape having perforations representing Morse characters, a transmitter controlled by said tape for operating a receiver in a main line, perforating means controlled by said receiver for perforating a tape in fac-simile of the original tape, and

means controlled by said perforating means for reproducing the signals perforated in.

the tape.

3. In telegraphy, a transmitter and a receiver in a; main circuit, a perforator in a local circuit controlled by said receiver, a tape perforated to represent Morse signals, and a polarized transmitter in a local circuit controlled by said perforator.

4. In telegraphy, a receiver, a perforator controlled by said receiver, means controlled by said perforator for recording signals by perforations in a tape and means also controlled by said perforator for transmitting duplicate signals into another circuit simultaneously with perforation of said tape.

5. In telegraphy, an automatic transmitter, a local circuit, a polarizedtransmitter in said local circuit controlled by said automatic transmitter, means for actuatin said polarized transmitter by reverse impu ses of uniform duration, a main circuit, a polarized receiver'in said main circuit, means controlled by said polarized transmitter for sending impulses'of unequal duration to said polarized receiver, a local circuit controlled by said polarized receiver, a perforator in said local circuit, a local circuit controlled by said perforator, a polarized transmitter in said last named local circuit, and means controlled by said last named polarized transmitter for sending impulses of unequal duration into another main circuit. I

In testimony whereof, I have hereunto subscribed my name.

PATRICK B. DELANY.

Witnesses:

L. F. BROWNING, E. F. Wrens. 

